Mobile Intel
Celeron Processor (0.18μ) in BGA2 and Micro-PGA2 Packages
Datasheet
Order Number#249563-001
12
2.
Mobile Intel Celeron Processor
Features
2.1
New Features in the Mobile Intel Celeron Processor
2.1.1
On-die GTL+ Termination
The termination resistors for the GTL+ system bus are integrated onto the processor die. The
RESET# signal does not have on-die termination and requires an external 56.2
±1% terminating
resistor.
2.1.2
Streaming SIMD Extensions
The mobile Intel Celeron processor implements Streaming SIMD (single instruction, multiple
data) extensions. Streaming SIMD extensions can enhance floating point, video, sound, and 3-D
application performance.
2.1.3
Signal Differences Between the Mobile Intel Celeron
Processors in the BGA1/Micro-PGA1 and the BGA2/Micro-
PGA2
With the exception of BCLK, PICCLK, and PWRGOOD, the CMOS inputs and Open-drain
outputs have changed from 2.5V tolerant to 1.5V tolerant.
Table 1. New BGA2/Micro-PGA2 Signals
Signals
Function
CLKREF
System bus clock trip point control
CMOSREF
1.5V CMOS input buffer trip point control
EDGECTRLP
GTL+ output buffer control
BSEL[1:0]
Processor system bus speed selection
RSVD
Reserved, may be defined in the future
RTTIMPEDP
On-die GTL+ termination control
VCCT
On-die GTL+ termination current supply
VID[4:0]
Voltage Identification
Table 2. Removed BGA1/μPGA1 Signals
Signals
Purpose
EDGECTRLN
GTL+ output buffer control
BSEL
100/66 MHz processor system bus speed selection